An effective process for the separation of U(VI), Th(IV) from rare earth elements by using ionic liquid Cyphos IL 104

Efficient, fast, simple, and eco-friendly methods for separation of toxic chromium(VI) ions based on ion exchangers and polymer materials impregnated with Cyphos IL 101, Cyphos IL 104, or D2EHPA

“…For example, Cyphos IL 101 has been successfully applied in solvent extraction for the recovery of nickel and cadmium from the “black mass” of spent Ni-Cd batteries (Mahandra et al 2022 ), gold from thiosulfate leachate of sulfidic gold ore (Paiva et al 2022 ), and platinum-group metals from spent auto-catalysts (Chen et al 2022b ). Cyphos IL 104 proved to be an efficient extractant in ionic liquid extraction of rare earth elements (REEs) (Lu et al 2022 ; Wiecka et al 2022 ) as well as platinum group metals (Tang et al 2022 ) from different types of leachates obtaining from waste (e.g., spent neodymium magnets, automotive converters). D2EHPA has been used, among others, in solvent extraction intended for vanadium removal from aqueous leachate of stone coal after low-temperature sulfation roasting and of indium recovery from acidic leaching solutions (Grigorieva et al 2022 ; Bensaadi et al 2022 ).…”

Simultaneously Recovery of Thorium and Tungsten through Hybrid Electrolysis–Nanofiltration Processes

“…The development of new technologies for the recovery of metals from urban waste requires solid arguments regarding the value of the separated metals or the negative impact on the environment if such metals are not separated and recycled [ 9 , 10 , 11 ]. A special case reported recently [ 12 ] shows that metals such thorium or tungsten that come from electric and electronic equipment or materials used in construction (refractory bricks and welding electrodes) can appear in urban waste [ 13 , 14 ].…”

“…A special case reported recently [ 12 ] shows that metals such thorium or tungsten that come from electric and electronic equipment or materials used in construction (refractory bricks and welding electrodes) can appear in urban waste [ 13 , 14 ]. The recovery of both metals is of technical importance because they have high practical utility [ 11 , 15 ] but also because they have a particularly undesirable impact on the environment, especially thorium [ 16 ].…”

“…Moreover, tungsten has been the focus of process engineers for its recovery from various residues through electrolytic processes and acid or basic solubilization processes [ 26 , 27 , 28 , 29 , 30 ]. On the other hand, thorium has been the focus of researchers in the field of membranes for concentration, separation or purification, especially when it comes from ores in which uranium or rare earths can also be found [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ] ( Table 1 ).…”

Enhanced Versatility in Thorium Removal: Mesoporous Silica-Coated Magnetic Nanoparticles Functionalized by Phenanthroline Diamide as a Selective Adsorbent

“…As a reliable, low-carbon, and sustainable energy source, nuclear energy has attracted considerable interest as a result of the rapid expansion of businesses and rising energy demands. , However, it is estimated that traditional uranium resources will run out in approximately 80 years, and without the commercial extraction of other uranium deposits, thorium has emerged as a promising alternative due to it being four times more abundant in nature. , Since 232 Th may be transmuted into 233 U by neutron bombardment in a reactor, thorium-based reactors have been suggested as the nuclear fuel of the future. − …”